In which Derek has been invited to the Greater Pacific Northwest Alpha Symposium (that's not what it's called, Stiles, stop saying that), and showing up unattached would mean an arranged marriage. When the rest of the pack objects, he agrees to let Stiles come along to pose as his mate. Derek is reasonably sure that he's not going to make it out of this weekend alive.
In which Derek has been invited to the Greater Pacific Northwest Alpha Symposium (that's not what it's called, Stiles, stop saying that), and showing up unattached would mean an arranged marriage. When the rest of the pack objects, he agrees to let Stiles come along to pose as his mate. Derek is reasonably sure that he's not going to make it out of this weekend alive.